Home / 764,326.80-1,146,490.20-314,898.30

Finding the Fourth Proportional to 764,326.80, 1,146,490.20 and 314,898.30

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Solution

The fourth proportional to 764,326.80, 1,146,490.20 and 314,898.30 is: 472,347.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,326.80 : 1,146,490.20 = 314,898.30 : x
  2. Step 2: Convert to fraction form
    764,326.80/1,146,490.20 = 314,898.30/x
  3. Step 3: Cross multiply
    764,326.80x = 1,146,490.20 × 314,898.30
  4. Step 4: Simplify right side
    764,326.80x = 361,027,814,946.66
  5. Step 5: Solve for x
    x = 361,027,814,946.66/764,326.80
  6. Step 6: Final answer
    x = 472,347.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.